6381046990 has 16 divisors (see below), whose sum is σ = 11498030352. Its totient is φ = 2549719744.

The previous prime is 6381046981. The next prime is 6381047009. The reversal of 6381046990 is 996401836.

It is a self number, because there is not a number n which added to its sum of digits gives 6381046990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327439 + ... + 346378.

It is an arithmetic number, because the mean of its divisors is an integer number (718626897).

Almost surely, 2^6381046990 is an apocalyptic number.

6381046990 is a deficient number, since it is larger than the sum of its proper divisors (5116983362).

6381046990 is a wasteful number, since it uses less digits than its factorization.

6381046990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674771.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 6381046990 is about 79881.4558580400. The cubic root of 6381046990 is about 1854.8009696298.

It can be divided in two parts, 638 and 1046990, that added together give a triangular number (1047628 = T₁₄₄₇).

The spelling of 6381046990 in words is "six billion, three hundred eighty-one million, forty-six thousand, nine hundred ninety".